Hydraulic pressure generating, controlling, and applying device.



J. W. NELSON. HYDRAULIC PRESSURE GENERATING, CONTROLLING, AND APPLYINGDEVICE. APPLICATION IILED DEC. 19, 1908.

941, 1 67. Patented Nov. 23, 1909.

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HYDRAULIG PRESSURE GENERATING, CONTROLLING, AND APPLYING DEVICE.APPLICATION FILED DEO.19, 1908.

941, 1 67. Patented Nov. 23, 1909.

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JAMES W. NELSON, OF NEW YORK, N. Y.

HYDRAULIC PRESSURE GENERATING, CONTROLLING, AND APPLYING DEVICE.

Specification of Letters Patent.

Patented Nov. 23, 1909.

Application filed December 19, 1908. Serial No. 468,344.

To all whom it may concern:

Be it known that I, JAMES W. NELSON, a citizen of the United States, anda resident of the city of New York, borough of Brooklyn, county ofKings, and State of New York, have invented certain new and usefulImprovements in Hydraulic Pressure Generating, Controlling, and ApplyingDevices, of which the following is a specification.

This invention relates to hydraulic jacks in connection with which themeans for generating the hydraulic pressure are lo cated at somedistance from the device or devices for applyin the pressure, and whichare provided with means apart from both the generating and applyingmeans for controlling the generated pressures.

In a copending application, filed January 27, 1908, Ser. No. 2,855, Ihave shown and described apparatus for generating and applying hydraulicpressure which comprises two separate pumps, two separate rams, suitableflexible connecting conduits thcrebetween, and a device located inproximity to said rams for equalizing and distributing the pressure ofthe two pumps and operable to control and finally relieve the appliedpressures.

The present iivention contemplates improvements in this device forequalizing,

distributing and controlling the pressures. It is well known thathydraulic apparatus of this character is frequently used in localitiesand under conditions which render it exceedingly diflicult to providepure water for the pumps. The sediment or foreign matter in impure wateris likely to soon become lodged to a greater or lesser extent in thevalve seats and ultimately prevents satisfactory operation of thevalves. Inasmuch as all pump and pressure valves in the present type ofapparatus are located in what I may term the valve block or controllingmember, interposed between the pumps and the rams, I have found thatwhere the valves seat downwardly in channels through which the water isforced in an upward direction under pressure, sediment does not becomeso easily lodged in the valve seats, and if lodged is more easilydislodged by the flow of water in a down ward direction through thechannels when the pressure is relieved. The present invention,therefore, contemplates a valve block in which the valves are downwardlyseated and means for retaining said block in a substantially verticalposition during operation of the device.

My invention will be more readily understood by reference to theaccompanying drawings, forming a part of this specification, in whichFigure 1 is a diagrammatic view, parts thereof being in section, of acomplete apparatus embodying my invention; Fig. 2 is an enlarged centralvertical section of the valve block or pressure controlling device, andFig. 3 is a transverse central section through the lower part of saidvalve block.

Referring now to the drawings in detail, numerals 11 and 12 refer to twopumps, each of the single piston or plunger type. The pump 11 ispreferably mounted on a suitable base plate 13 and I have shown theplunger therein adapted to be reciprocated by means of the ordinary pumplever 14. The pump 12 is shown mounted upon a suitable plate 15 and isoperated by means of the lever 16. From the pump chamber underneath thepiston in the pump 11, leads a suitable duct to the pipe 17, andsimilarly, from the pump chamber underneath the piston in the pump 12,leads a duct to the pipe 18. These pipes 17 and 18 lead to the valveblock or pressure controlling device 19. This valve block preferablycomprises a cylindrical-shaped body having a larger longitudinal bore 20at the lower end thereof, the bottom of which is preferably closed andsealed by means of the screw-cap 21. At the upper end of the block 19are provided two smaller longitudinal bores which extend from the top ofthe device to an open into the bore 20, each of these smaller boresbeing of varying diameters and of smaller diameter adjacent to the bore20.

Referring first to the bore, I have shown the same at 22 increased indiameter to provide a seat for the valve 23 which has a stem 24extending downwardly and pro jecting slightly into the bore 20. Withinthe widened portion 25 of this bore, I insert a removable cylindricalplug 26, the top of which provides a seat for the valve 27 which has astem 28 extending downwardly nearly but not quite to the top of thevalve 23. Above the valve 27, the bore is again increased in diameter,the top thereof being closed and sealed by means of the screw-cap 29 toprovide a chamber 30 above the valve 27. Similarly, the smaller portion31 of the other bore is at 32 increased in diameter to provide a seatfor the valve 33, which has a stem 34 extending downwardly andprojecting slightly into the bore 20. The enlarged portion 35 of saidbore is similarly provided with the cylindrical plug 36, the top ofwhich provides a seat for the valve 37 which has a stem 38 projectingdownwardly nearly but not quite to the top of the valve 33. This bore issimilarly closed and sealed at its upper end by means of the screw-plug39 which similarly provides a chamber 40 above the valve 37. Thechambers 30 and 40 are connected by the open duct 41. From the portion25 of one of these valve bores, between the valves 23 and 27, leads aduct 42 to and through the arm or lug 43, which is screw-threaded forthe reception of the coupling or connection 44 at the end of the pipe17. Similarly, from the portion 35 of the other bore, between the valves33 and 37, leads a duct 45 to and through arm or lug 46, which isscrewthreaded for the reception of the coupling 47 at the end of thepipe 18.

From the chamber 30 leads the lateral duct 48 to and through the arm orlug 49, which is screw-threaded for the reception of the coupling 50 atone end of the pipe 51 which leads to one of the rams, and from thechamber 40 leads a similar duct 52 to and through the lug or arm 53,which is screw-threaded for the reception of the coupling 54 at the endof the pipe 55 which leads through the coupling 56 to the chamber 57below the ram 58 in the cylinder 59. In a similar manner, the pipe 51leads through the coupling 60 to the chamber below the ram 61 in thecylinder 62.

Fitting within the bore 20, is the cylinder or push tube 63, the upperend of which is positioned to impinge, when raised, against the stems 24and 34 of the valves 23 and 33. This cylinder is provided at its lowerend with the in-turned flange 64, providing a seat for the spring 65which acts against the top of the bore 20 to tend to keep said cylinderin its lowermost position.

The cylinder 19 is provided with a lateral aperture which is closed andsealed by the screw-plug 66, which is centrally bored to providebearings for the short shaft 67, on the inner end of which is mountedthe cam 68 in cooperative positional relation to the bottom of thecylinder 63. The outer end of the shaft 67 is provided with a head (39,in which is mounted the end of the lever by means of which said shaft 67is rotated and said cam 68 operated to raise and lower the cylinder 63.

It will be apparent that through the rotation of the shaft 67, the cammay be operated to raise the cylinder 63, the first effect of which willbe to engage the stem 24 of the valve 23 and hold the latter off itsseat. Continued rotation of the cam 68 will continue upward movement ofsaid cylinder (33 to engage the stem 34 of the valve 33 and raise andhold the latter off its seat, without, however, unseating either of thetwo valves 27 and 37. Further rotation of the shaft 67 will cause avalve 23 to impinge against the stem 28 of the valve 27 and raise andhold the latter off its seat, thereby opening a passage from the chamber30 to the bore 20. Still further raising of the cylinder 63 will causethe valve 33 to impinge 1,

against the stem 38 of the valve 37 and raise and hold the latter offits seat, thereby opening a passage from the chamber 40 to the bore 20.

From the lower part of the bore 20 leads a lateral duct 71 to andthrough the nipple 72, by means of which the rubber or other flexibletube or hose 73 may be secured to said block and be open to the bore 20.This pipe 63 leads to any suitable source of liquid supply, such as abarrel or tank.

In order that the valves may operate in a constantly vertical position,I mount the block 19 upon a suitable heavy standard 74, which is ofsufficient size and weight to prevent accidental overturning of theblock.

It will now be apparent that upon the up stroke of the piston within thepump 11, a partial vacuum will be formed in the pump chamber, and thisrelief of pressure'will result in the unseating of the valve 23 and aflow of liquid from the source of supply through the pipe 73 t0 the bore20, thence upwardly through the portion 21 of the valve bore, past thevalve 23 and through the duct 42 and the pipe 17 to the pump chamber.Upon the down-stroke of the piston in the pump 11, the excess ofpressure against the upper side of the valve 23 will, assisted bygravity, seat said valve, and the flow of water is directed upwardlythrough the portion 25 of said bore, past the valve 27 and into thechamber 30, where, on account of the duct 41, the generated pressure isequally distributed between the chambers underneath the rams 58 and 61.Similarly, upon the up-stroke of the piston in the pump 12, a partialvacuum is formed in the pump chamber which results in the flow of liquidfrom the source of supply to the bore 20, upwardly past the valve 33 tothe duct- 45 and thence to said pump chamber. Upon the down-stroke ofsaid piston, said valve 33 is seated, and the liquid is directedupwardly through the portion of the valve bore, past the valve .37,which it unseats, and into the chamber 40, where it is similarlydistributed between the two ram chambers. It will therefore be seen thateither one or both pumps may be operated, each having its own valvechecking back flow to the source of supply, and that the effectivestrokes, if both pumps are employed, may be either alternate or inunison. If both pumps are used, irrespective of the force employed, thepressures are equalized between the chambers 30 and 40. These pumps aresometimes coupled to a common source of power, and under suchcircumstances it might be at times inconvenient to check operation ofone of said pumps alone. Under such circumstances, it is only necessaryfor the operator, stationed near the rams, where the work is being doneand where the progress thereof can readily be noted, to turn the leverto an arc sufiicient to raise the push-tube G3 and unseat the valve 23.Under such conditions, the operation of the pump 11 will be inefiective,the liquid drawn into the pump chamber of the piston, returning past thenow open valve to the source of supply. Should it become desirable toterminate altogether the application of increased pressure, the lever 70may be turned through a slightly greater are, operating to unseat thevalve 33 as well as the valve 23, under which conditions the operationsof the pumps will be wholly ineffective although the valves 27 and 37would prevent relief of the generated pressures in the ram chambers.

hen it is desired to relieve the pressure in the ram chambers, for thepurpose of removing or replacing the jacks or for any other purpose, thelever 70 is turned through a still greater are, elevating the valve tothe point where it impinges against the stem 28 of the valve 37 andunseats the latter, operating in the manner described to provide an openpassage from the chambers underneath both rams to the source of supply.

Many modifications of minor details of my improved hydraulic pressuregenerating, controlling and applying devices will doubtless readilysuggest themselves to those skilled in the art to which it appertains,and I therefore do not desire to limit my invention to the specificconstruction, location and arrangement of parts as herein shown anddescribed:

I claim as new and Letters Patent:

1. In combination, a plurality of separate pressure generating means,means apart therefrom for applying the generated pressures, andrequisite valves all located in an individuallymovable member andclownwardly seating therein.

2. In combination, a plurality of'separate pressure generating means,means apart therefrom for applying the generating pressures, andrequisite valves all located in an individually-movable member and downwardly seating therein, and means for re taining said member in a propervertical position during operation.

desire to secure by upon the rip-stroke 3. In combination, a pluralityof separate pressure generating means, means apart therefrom forapplying the generated pres sures, and requisite valvesall located in anindividually-m0vable member and downwardly seating therein, and meansfor rendering one or more of said valves inoperative.

l. In combination, a plurality of separate pressure generating means,means apart therefrom for applying the generated pressures, andrequisite valves all located in an individually-movable member anddownwardly seating therein, means for rendering one or more of saidvalves inoperative, and means for retaining said member in a propervertical position during operation.

5. In combination, a plurality of separate pressure generating means,means apart therefrom for applying the generated pres sures, andrequisite valves all located in an individually-movable member and downwardly seating therein, said member being provided with means forunseatiug one or more of said valves and with means for insuringvertical operation of said valves during use of the device.

6. In combination, a plurality of separate pressure generating means,means apart therefrom for applying the generated pre sures, andrequisite valves all located in an individually-movable member anddownwardly seating therein, means for sup ing liquid through said memberfrom a point below said valves, and means for insuring verticaloperation of said valves during use of the device.

7. In combination, a plurality of pumps, suitable conduits from saidpumps which unite in a common pressure-distributing chamber, suitabledownwardly-seating valves in each of said conduits, and means common toall of said valves for positively unseating the same, said valves andsaid means being constructed and arranged to cause one or more thereofto be unseated as desired.

8. In combination, a plurality of pumps, suitable conduits from saidpumps which unite in a common pressure-distributing chamber,downwardly-seating valves in each of said conduits, means common to allof said valves to positively unseat the same, said valves and said meansbeing constructed and arranged to cause one or more thereof to beunseated as desired, and means for applying the resultant pressure insaid distributing chamber.

9. In combination, a plurality of pumps, suitable conduits from saidpumps which unite in a common pressare-distributing chamber,downwardly-seating valves in each of said conduits, and means below andcommon to all of said valves for unseating the same in consecutiveorder.

10. In combination, a plurality of pumps,

suitable conduits from said pumps which unite in a common pressuredistributing chamber, downwardly-seating valves in each of said conduitsthe lower checking back flow to the source of supply and the upperchecking back flow from said distributing chamber, and means havingcommon actuating means for successively unseating the valves in eachconduit.

11. In combination, a plurality of pumps, a source of liquid supplycommon to all of said pumps, suitable conduit-s, from said pumps whichunite in a common pressure distributing chamber, two downwardly-seatingvalves in each of said conduits, the lower checking back flow to saidsource supply and the upper checking back flow from said distributingchamber, and means having common actuating means for unseating one orboth of the valves in each conduit and corresponding valves in allconduits successively.

12. In combination, a plurality of means for generating hydraulicpressures, means for applying the generated pressures, suitableconnecting conduits therebetween, two downwardly-seating valves in eachconduit, and common means for successively unseating the lower valves insaid conduits and subsequently similarly consecutively unseating theupper valves in said conduits.

13. In combination, a plurality of means for generating hydraulicpressures, means for applying the generated pressures, suitableconnecting conduits therebetween, a source of liquid supply common toall of said conduits, a downwardly-seating check valve in eachconduitchecking back flow from said source of supply, downwardlyseatingfinal pressure valves, and means common to all of said valves for firstunseating said check valves successively and then similarly successivelyunseating said pressure valves.

14. In combination, a plurality of means for generating hydraulicpressures, means for applying the generated pressures, suitableconnecting conduits therebetween, two downwardly-seating valves in eachconduit, and common means for successively unseating the lower valves insaid conduits, said means bemg further operable to slmllarlysuccessively unseat the upper valves in said conduits.

15. In combination, a plurality of means for generating hydraulicpressures, means for applying the generated pressures, suitableconnecting conduits therebetween, and an individually-movable memberintermediate the ends of said conduits through which said conduits aredirected, said member containing an independent series ofdownwardly-seating valves for each conduit and common means for theirmanual control.

16. In combination, a plurality of means for generating hydraulicpressures, means for applying the generated pressures, suit ableconnecting conduits therebetween, an individually-movable memberintermediate the ends of said conduits through which said conduits aredirected, said conduit-s in said member each containing an independentseries of downwardly-seating pump and pressure valves, and common meansfor first successively unseating the lower valves in the several seriesand subsequently similarly successively unseating the upper valves insaid series.

17. In combination, a plurality of means for generating hydraulicpressures, means for applying the generated pressures, suitableconnecting conduits therebetween, an individually-movable memberintermediate the ends of said conduits through which said conduits aredirected, each of said conduits in said member being provided withdownwardly-seating valves, and means for successively unseating thelower valves in said conduits, said means being further operable tosimilarly successively unseat the upper valves in said conduits.

18. In combination, a plurality of means for generating hydraulicpressures, means for applying the generated pressures, suitableconnecting conduits therebetween, an individually-movable memberintermediate the ends of said conduits through which said conduits aredirected, said conduits in said member each containing an independentseries of downwardly-seating pump and pressure valves, and common meansfor first successively unseating the lower valves in the several seriesand subsequently similarly successively unseating the remaining valvesin said series, and means for retaining said individually-movable memberin a substantially vertical position during operation of the device.

19. In combination, a plurality of means for generating hydraulicpressures, means for applying the generated pressures, suit ableconnecting conduits therebetween, an individually-movable memberintermediate the ends of said conduits through which said conduits aredirected, each of said conduits in said member being provided withdownwardly seating check and pressure valves, means for successivelyunseating the lower valves in said conduits, said means being furtheroperable to similarly successively unseat the remaining valves in saidconduits, and means for retaining said individuallymovablemember in asubstantially vertical position during operation of the device.

In testimony of the foregoing, I have hereunto set my hand in thepresence of two witnesses.

JAMES \V. NELSON. Vitnesses HELEN CROOKER, JAS. Moore.

